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VulnerabilitiesNov 6, 2026

CISA Adds One Known Exploited Vulnerability to Catalog

CISA adds CVE-2026-19868 SonicWall SonicOS SSLVPN vulnerability to KEV Catalog.

CISA has added CVE-2026-19868, a SonicWall SonicOS SSLVPN vulnerability related to single-factor authentication, to its Known Exploited Vulnerabilities (KEV) Catalog due to evidence of active exploitation. This addition mandates Federal Civilian Executive Branch (FCEB) agencies to prioritize its remediation under Binding Operational Directive (BOD) 26-04, which emphasizes risk-based vulnerability management for publicly exposed assets.

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The lesson from this incident

Full lesson

A critical vulnerability in SonicWall SonicOS SSLVPN, tied to weaknesses in single-factor authentication, is being actively exploited in the wild, prompting CISA to add it to its Known Exploited Vulnerabilities Catalog. The flaw highlights the persistent risk of leaving internet-facing network appliances unpatched, particularly those handling remote access where exploitation can provide attackers with direct entry into enterprise networks. Federal agencies are now mandated under BOD 26-04 to remediate the issue on a risk-prioritized timeline, underscoring how regulatory pressure is increasingly required to drive timely patching. This incident matters because SSLVPN gateways are high-value targets — a successful exploit can bypass perimeter defenses entirely, granting attackers privileged network footholds.

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Indicators of Compromise

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  • cve — CVE-2026-19868

Entities

SonicWall (vendor)SonicOS (product)SSLVPN (technology)KEV Catalog (product)BOD 26-04 (product)CISA (vendor)